Fixed authentication issue for admin users accessing the /users/db-health endpoint:
- Added JWT token extraction from cookies (req.cookies?.jwt)
- Added support for Bearer token from Authorization header
- Improved error handling for missing and invalid tokens
- Ensured consistent authentication flow for admin users
Changes made:
- Check for JWT token in req.cookies?.jwt
- Support Bearer token from Authorization header
- Return 401 error when token is missing
- Return 401 error when token validation fails
Fixes: https://github.com/Termix-SSH/Support/issues/12
